cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that… (CVE-2026-28529)
cryptodev-linux version 1.14 and earlier contains a use-after-free vulnerability in the get_userbuf function of the /dev/crypto device driver. This flaw allows local users with access to /dev/crypto to decrement reference counts of controlled pages repeatedly, potentially leading to local privilege escalation.
AI Analysis
Technical Summary
The vulnerability in cryptodev-linux (CVE-2026-28529) involves improper handling of page references in the get_userbuf function within the /dev/crypto device driver. Specifically, local users can trigger use-after-free conditions by repeatedly decrementing reference counts of pages they control. This can lead to local privilege escalation by exploiting the resulting memory corruption. The issue affects versions 1.14 and prior. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. There are no known exploits in the wild and no patch links provided in the data.
Potential Impact
Successful exploitation allows a local attacker with access to the /dev/crypto interface to escalate privileges on the affected system by exploiting use-after-free conditions. This impacts confidentiality, integrity, and availability of the system at a high severity level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict access to the /dev/crypto device to trusted users only to reduce risk.
cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that… (CVE-2026-28529)
Description
cryptodev-linux version 1.14 and earlier contains a use-after-free vulnerability in the get_userbuf function of the /dev/crypto device driver. This flaw allows local users with access to /dev/crypto to decrement reference counts of controlled pages repeatedly, potentially leading to local privilege escalation.
CVSS v3.1
Score 7.8high
Affected software
pkg:github/cryptodev-linux/cryptodev-linuxRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in cryptodev-linux (CVE-2026-28529) involves improper handling of page references in the get_userbuf function within the /dev/crypto device driver. Specifically, local users can trigger use-after-free conditions by repeatedly decrementing reference counts of pages they control. This can lead to local privilege escalation by exploiting the resulting memory corruption. The issue affects versions 1.14 and prior. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. There are no known exploits in the wild and no patch links provided in the data.
Potential Impact
Successful exploitation allows a local attacker with access to the /dev/crypto interface to escalate privileges on the affected system by exploiting use-after-free conditions. This impacts confidentiality, integrity, and availability of the system at a high severity level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict access to the /dev/crypto device to trusted users only to reduce risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vgx9-cpq5-rx9p
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-28529"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a838c49bf8831d539b4c9a5
Added to database: 08/17/2026, 22:33:45 UTC
Last enriched: 08/17/2026, 22:41:48 UTC
Last updated: 09/10/2026, 19:36:53 UTC
Views: 12
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